US4443888A - SID Monitor - Google Patents
SID Monitor Download PDFInfo
- Publication number
- US4443888A US4443888A US06/362,808 US36280882A US4443888A US 4443888 A US4443888 A US 4443888A US 36280882 A US36280882 A US 36280882A US 4443888 A US4443888 A US 4443888A
- Authority
- US
- United States
- Prior art keywords
- cable
- housing
- drum
- aperture
- wire
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000002601 radiography Methods 0.000 claims abstract description 3
- 238000006073 displacement reaction Methods 0.000 claims description 6
- 239000002356 single layer Substances 0.000 claims description 4
- 238000004804 winding Methods 0.000 claims description 3
- 230000013011 mating Effects 0.000 claims 2
- 238000013459 approach Methods 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/44—Constructional features of apparatus for radiation diagnosis
- A61B6/4476—Constructional features of apparatus for radiation diagnosis related to motor-assisted motion of the source unit
- A61B6/4482—Constructional features of apparatus for radiation diagnosis related to motor-assisted motion of the source unit involving power assist circuits
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
- G01B7/026—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness for measuring length of cable, band or the like, which has been paid out, e.g. from a reel
Definitions
- SID monitor In this type of SID monitor, a wide guide or slot was provided in the housing to allow the cable and guide roller to traverse across the grooved drum.
- Other SID monitors have not provided for level winding, that is winding at a constant diameter, and hence have failed to accurately convert linear into rotary motion, which resulted in an inaccurate source to image distance signal.
- Still other approaches to providing a SID monitor included running a pinion gear against a rack to translate linear into rotary motion which was then converted into an appropriate electrical signal. Such a gear system resulted in a complicated, costly apparatus which required careful alignment and which was subject to becoming jammed or broken in the event a foreign object was interposed between the pinion and rack.
- the object of this invention is to meet the needs for a simple, inexpensive and reliable SID monitor, this invention provides a self-traversing, constant-diameter takeup cylinder which receives a torque from a takeup spring while being required to move in a helical motion past a fixed aperture to allow a wire moving through the aperture to be wound in a single layer on the cylinder.
- a continuous source to image distance transducer which has a cable attached within the transducer at one end and to a relatively moveable portion of the X-ray equipment at its other end, a rewind spring to maintain cable tension, a housing having a fixed aperture therein which is adapted to permit the cable to move longitudinally through the aperture and which prevents transverse displacement of the cable within the housing in the event of transverse displacement of the cable outside the housing, and a smooth surfaced drum to level wind the cable by combined rotation and translation of the drum with respect to the aperture.
- FIG. 1 discloses a perspective view of the assembly of this invention.
- FIG. 2 shows an end view of details of the assembly of this invention not visible in FIG. 1.
- FIGS. 3a and 3b show respectively an end and sectional view of the rewind drum.
- FIG. 4a is an exploded view of the components of this invention.
- FIG. 4b is a side view of the rewind spring assembly.
- Transducer 10 is preferably mounted to a stationary portion of the X-ray apparatus (not shown) with which it is associated by means of mounting bracket 12.
- Transducer 10 is contained within a housing 14 shown only in outline form in FIG. 1.
- a cable or wire 16 passes through a fixed aperture 18 in housing 14 and is secured at one end 20 to a drum 22 and at the other end 24 to a relatively moveable portion of the X-ray apparatus (not shown).
- end 24 is secured to a moveable X-ray source, while transducer 10 is fixed with respect to the X-ray image or film plane (not shown).
- cable 16 will move in correspondence to the change in the source to image distance of the associated X-ray apparatus and provide an electrical signal output varying continuously in proportion to the changing source to image distance.
- Drum 22 is mounted on and is free to threadably engage a threaded portion 26 of shaft 27.
- Shaft 27 is stationary and secured to housing 14.
- a rewind spring mechanism 28 is concentrically located and is free to rotate about a smooth section of shaft 27 and is pretensioned to provide torque about shaft 27 with respect to housing 14 by means of an eccentric crank 30.
- Crank 30 engages drum 22 by passing through an eccentric hole 32 (see FIGS. 3a and 3b) in drum 22 and also engages an arm 34 coupled to the moveable element of electrical potentiometer 36.
- the body of electrical potentiometer 36 is secured to housing 14 and is preferably in axial alignment with drum 22 and shaft 27.
- Rewind spring mechanism 28 thus tensions cable 16 by applying its torque to drum 22 through crank 30.
- FIG. 2 an end view of the remaining components of transducer 10 may be seen.
- Housing 14 is again shown only in outline form.
- Snap action switch 38 is mounted by means of conventional hardware 40 to housing 14.
- Switch 38 is toggled by a rotating starwheel 42.
- Starwheel 42 is secured to and rotates with the portion of mechanism 28 to which crank 30 is secured.
- switch 38 has a moveable contact and a normally opened and a normally closed contact.
- the normally opened and normally closed contacts are preferably shorted electrically together and brought out by a conventional electrical lead as is the moveable contact.
- switch 38 provides a series of momentary open pulses as it is toggled by starwheel 42 and indicates to the associated X-ray control circuit (not shown) that the source to image distance of the associated X-ray apparatus is changing.
- Drum 22 has a smooth or flat outer cylindrical surface 44 connected by a web 46 to a hub 48. Surface 44 is concentric to a threaded bore 50. An eccentric hole 32 is provided in web 46 to receive eccentric crank 30. A radially oriented hole 52 is provided in the outer surface 44 of drum 22 to receive and secure cable end 20.
- FIG. 4a shows potentiometer 36 mounted by means of a suitable adhesive such as epoxy to a threaded boss or pad 54 which is suitably secured to case 14 as for example, by nut 56.
- Shaft 56 operates the moveable element of potentiometer 36 and is coupled to eccentric crank 30 by arm 34.
- Arm 34 is secured to shaft 56 by a conventional set screw 58.
- Potentiometer 36 is a multi-turn type with number of turns preferably at least equal to the designed number of wraps of cable 16 on drum 22 when cable 16 is fully retracted into housing 14.
- rewind spring mechanism 28 includes a smooth-bored hub 69 and flange 70 onto which is rigidly secured eccentric crank 30 and starwheel 42.
- a slot 76 is provided in hub 69 to receive one end 78 of spring 72.
- the other end 80 of spring 72 is received on pin 82 of spring retainer plate 74.
- Plate 74 has an aperture 84 of sufficient diameter to permit passage of starwheel 42 therethrough.
- Plate 74 also has preferably four folded tabs 86 to restrain the maximum expansion of spring 72.
- the notches 88 formed as a result of folding tabs 86 preferably secure plate 74 to ribs 90 in housing 14 and hence allow spring assembly 28 to react against housing 14.
- the transducer 10 is assembled with a pretension in spring 72 and with clearance between drum 22 and flange 60 to permit relative motion between drum 22 and shaft 26 of both an angular and translational nature.
- cable 16 is taken up by transducer 10
- any motion of cable 16 external to aperture 18, whether longitudinal or transverse, will result only in a longitudinal motion of cable 16 interior of housing 14 because aperture 18 is fixed in housing 14 and is of relatively small clearance for cable 16.
- Aperture 18 preferably maintains cable 16 in tangential alignment with drum 22.
- the spacing of helical wraps of cable 16 on drum 22 is determined by the helical pitch (or axial distance moved for each revolution) of engaging threads in bore 50 and on threaded shaft portion 26.
- the helical pitch of these threads is selected to be somewhat larger than the diameter of cable 16 in order to prevent interference between successive wraps of cable 16 on drum 22.
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Medical Informatics (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Pathology (AREA)
- Biomedical Technology (AREA)
- Biophysics (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Optics & Photonics (AREA)
- General Physics & Mathematics (AREA)
- Radiology & Medical Imaging (AREA)
- High Energy & Nuclear Physics (AREA)
- Heart & Thoracic Surgery (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Apparatus For Radiation Diagnosis (AREA)
Abstract
Description
Claims (9)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/362,808 US4443888A (en) | 1982-03-29 | 1982-03-29 | SID Monitor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/362,808 US4443888A (en) | 1982-03-29 | 1982-03-29 | SID Monitor |
Publications (1)
Publication Number | Publication Date |
---|---|
US4443888A true US4443888A (en) | 1984-04-17 |
Family
ID=23427616
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US06/362,808 Expired - Lifetime US4443888A (en) | 1982-03-29 | 1982-03-29 | SID Monitor |
Country Status (1)
Country | Link |
---|---|
US (1) | US4443888A (en) |
Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4653190A (en) * | 1983-03-25 | 1987-03-31 | Spain Jr Robert A | Displacement transducer accommodating extreme environmental conditions |
DE3642432C1 (en) * | 1986-12-12 | 1988-02-04 | Bayerische Motoren Werke Ag | Control cable displacement pick-up |
DE4217607A1 (en) * | 1992-05-27 | 1994-02-17 | Asm Automation Sensorik Messte | Cable length measurement appts - has toothed belt reduction gear and precise cable guide at cable |
EP0597529A1 (en) | 1992-11-09 | 1994-05-18 | Stertil B.V. | Potentiometer device |
EP0745829A1 (en) * | 1995-06-02 | 1996-12-04 | Asm Automation, Sensorik, Messtechnik Gmbh | Measuring cable-transducer having a shell housing |
EP1014031A2 (en) * | 1998-12-22 | 2000-06-28 | Asm Automation, Sensorik, Messtechnik Gmbh | Measuring cable distance sensor having a longitudinal drive for the cable drum |
US6533076B1 (en) | 2002-02-06 | 2003-03-18 | Crown Equipment Corporation | Materials handling vehicle mast height sensor |
EP1873480A1 (en) * | 2006-06-29 | 2008-01-02 | Katimex Cielker GmbH | Testing and/or mounting device |
US20090283377A1 (en) * | 2008-05-15 | 2009-11-19 | Roe Steven N | Drug delivery pump drive using a shaped memory alloy wire |
CN101351682B (en) * | 2006-02-23 | 2011-04-13 | 微-埃普西龙测量技术有限两合公司 | Cable length sensor |
CN105698646A (en) * | 2014-11-27 | 2016-06-22 | 武汉联航机电有限公司 | Besides-star wheel fairway detection device |
CN105783658A (en) * | 2016-03-30 | 2016-07-20 | 上海长锐汽车零部件有限公司 | Special device for detecting VL-type universal joint inner star wheel raceway pitch diameter and detection method |
US20170280541A1 (en) * | 2016-03-23 | 2017-09-28 | Siemens Healthcare Gmbh | Guide device and x-ray device |
WO2019229778A1 (en) * | 2018-05-29 | 2019-12-05 | Tecna S.P.A. | Balancer for tools |
CN111649661A (en) * | 2020-06-08 | 2020-09-11 | 中国葛洲坝集团第一工程有限公司 | Stay wire sensor for dangerous rock monitoring and monitoring system |
US20220234189A1 (en) * | 2019-05-15 | 2022-07-28 | Tecna S.P.A. | Balancer for tools |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2293733A (en) * | 1941-07-21 | 1942-08-25 | Ingersoll Milling Machine Co | Precision measuring device |
US2293730A (en) * | 1941-07-03 | 1942-08-25 | Ingersoll Milling Machine Co | Measuring device |
US3566477A (en) * | 1967-04-19 | 1971-03-02 | Kenneth James Williams | Measuring instrument |
US3581094A (en) * | 1968-11-07 | 1971-05-25 | Machlett Lab Inc | X-ray apparatus |
US3863073A (en) * | 1973-04-26 | 1975-01-28 | Machlett Lab Inc | Automatic system for precise collimation of radiation |
US3936943A (en) * | 1974-04-15 | 1976-02-10 | Bullard Iii Edward P | Measuring system |
-
1982
- 1982-03-29 US US06/362,808 patent/US4443888A/en not_active Expired - Lifetime
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2293730A (en) * | 1941-07-03 | 1942-08-25 | Ingersoll Milling Machine Co | Measuring device |
US2293733A (en) * | 1941-07-21 | 1942-08-25 | Ingersoll Milling Machine Co | Precision measuring device |
US3566477A (en) * | 1967-04-19 | 1971-03-02 | Kenneth James Williams | Measuring instrument |
US3581094A (en) * | 1968-11-07 | 1971-05-25 | Machlett Lab Inc | X-ray apparatus |
US3863073A (en) * | 1973-04-26 | 1975-01-28 | Machlett Lab Inc | Automatic system for precise collimation of radiation |
US3936943A (en) * | 1974-04-15 | 1976-02-10 | Bullard Iii Edward P | Measuring system |
Non-Patent Citations (2)
Title |
---|
Machlett Technical Manual, St 3450 Collimaster, C, Machlett Labs. Inc., Stamford Ct., pp. 1, 10, 35 & FIG. 5 2. * |
Machlett Technical Manual, St-3450 Collimaster, C, Machlett Labs. Inc., Stamford Ct., pp. 1, 10, 35 & FIG. 5-2. |
Cited By (29)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4653190A (en) * | 1983-03-25 | 1987-03-31 | Spain Jr Robert A | Displacement transducer accommodating extreme environmental conditions |
DE3642432C1 (en) * | 1986-12-12 | 1988-02-04 | Bayerische Motoren Werke Ag | Control cable displacement pick-up |
DE4217607A1 (en) * | 1992-05-27 | 1994-02-17 | Asm Automation Sensorik Messte | Cable length measurement appts - has toothed belt reduction gear and precise cable guide at cable |
EP0597529A1 (en) | 1992-11-09 | 1994-05-18 | Stertil B.V. | Potentiometer device |
EP0745829A1 (en) * | 1995-06-02 | 1996-12-04 | Asm Automation, Sensorik, Messtechnik Gmbh | Measuring cable-transducer having a shell housing |
DE19859445A1 (en) * | 1998-12-22 | 2000-07-06 | Asm Automation Sensorik Messte | Measuring cable displacement sensor with a longitudinal drive for the cable drum |
DE19859445C2 (en) * | 1998-12-22 | 2001-01-11 | Asm Automation Sensorik Messte | Measuring cable displacement sensor with a longitudinal drive for the cable drum |
EP1014031A3 (en) * | 1998-12-22 | 2001-01-24 | Asm Automation, Sensorik, Messtechnik Gmbh | Measuring cable distance sensor having a longitudinal drive for the cable drum |
US6561451B1 (en) * | 1998-12-22 | 2003-05-13 | Asm Automation Sensorik Messtechnik Gmbh | Measuring cable travel sensor with longitudinal drive for the cable drum |
EP1014031A2 (en) * | 1998-12-22 | 2000-06-28 | Asm Automation, Sensorik, Messtechnik Gmbh | Measuring cable distance sensor having a longitudinal drive for the cable drum |
US6533076B1 (en) | 2002-02-06 | 2003-03-18 | Crown Equipment Corporation | Materials handling vehicle mast height sensor |
CN101351682B (en) * | 2006-02-23 | 2011-04-13 | 微-埃普西龙测量技术有限两合公司 | Cable length sensor |
EP1873480A1 (en) * | 2006-06-29 | 2008-01-02 | Katimex Cielker GmbH | Testing and/or mounting device |
US8172811B2 (en) | 2008-05-15 | 2012-05-08 | Roche Diagnostics Operations, Inc. | Drug delivery pump drive using a shaped memory alloy wire |
US8480633B2 (en) | 2008-05-15 | 2013-07-09 | Roche Diagnostics Operations, Inc. | Drug delivery pump drive using a shaped memory alloy wire |
US20090283377A1 (en) * | 2008-05-15 | 2009-11-19 | Roe Steven N | Drug delivery pump drive using a shaped memory alloy wire |
US9463274B2 (en) | 2008-05-15 | 2016-10-11 | Roche Diabetes Care, Inc. | Drug delivery pump drive using a shaped memory alloy wire |
CN105698646B (en) * | 2014-11-27 | 2019-11-15 | 武汉联航机电有限公司 | Out star wheel alley detection device |
CN105698646A (en) * | 2014-11-27 | 2016-06-22 | 武汉联航机电有限公司 | Besides-star wheel fairway detection device |
US10779386B2 (en) * | 2016-03-23 | 2020-09-15 | Siemens Healthcare Gmbh | Guide device and x-ray device |
US20170280541A1 (en) * | 2016-03-23 | 2017-09-28 | Siemens Healthcare Gmbh | Guide device and x-ray device |
CN105783658A (en) * | 2016-03-30 | 2016-07-20 | 上海长锐汽车零部件有限公司 | Special device for detecting VL-type universal joint inner star wheel raceway pitch diameter and detection method |
WO2019229778A1 (en) * | 2018-05-29 | 2019-12-05 | Tecna S.P.A. | Balancer for tools |
CN112203804A (en) * | 2018-05-29 | 2021-01-08 | 泰克纳股份公司 | Balancer for tool |
CN112203804B (en) * | 2018-05-29 | 2023-08-22 | 泰克纳股份公司 | Balancer for tool |
US11850723B2 (en) | 2018-05-29 | 2023-12-26 | Tecna S.P.A. | Balancer for tools |
US20220234189A1 (en) * | 2019-05-15 | 2022-07-28 | Tecna S.P.A. | Balancer for tools |
US11975439B2 (en) * | 2019-05-15 | 2024-05-07 | Tecna S.P.A. | Balancer for tools |
CN111649661A (en) * | 2020-06-08 | 2020-09-11 | 中国葛洲坝集团第一工程有限公司 | Stay wire sensor for dangerous rock monitoring and monitoring system |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: LITTON INDUSTRIAL PRODUCTS, INC., 360 NORTH CRESCE Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNORS:CUTTER, JAMES W. INDIVIDUALLY;BURBURY, ROBERT L. INDIVIDUALLY;KB ASSOCIATES;REEL/FRAME:003995/0651 Effective date: 19820322 |
|
STCF | Information on status: patent grant |
Free format text: PATENTED CASE |
|
AS | Assignment |
Owner name: LITTON SYSTEMS, INC., 360 NORTH CRESCENT DRIVE, BE Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:LITTON INDUSTRIAL PRODUCTS, INC;REEL/FRAME:004236/0913 Effective date: 19840227 |
|
FPAY | Fee payment |
Year of fee payment: 4 |
|
AS | Assignment |
Owner name: SIEMENS MEDICAL SYSTEMS, INC., 186 WOOD AVENUE SOU Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:LITTON SYSTEMS, INC.;REEL/FRAME:005258/0409 Effective date: 19881027 |
|
FPAY | Fee payment |
Year of fee payment: 8 |
|
AS | Assignment |
Owner name: EUREKA ACQUISITION CORPORATION A CORP. OF DE, IL Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:SIEMENS MEDICAL SYSTEMS, INC. A CORP. OF OF DE;REEL/FRAME:006268/0254 Effective date: 19920901 |
|
AS | Assignment |
Owner name: EUREKA X-RAY TUBE CORP., ILLINOIS Free format text: CHANGE OF NAME;ASSIGNOR:EUREKA ACQUISITION CORP.;REEL/FRAME:007275/0239 Effective date: 19920831 |
|
AS | Assignment |
Owner name: PROGENY, INC., ILLINOIS Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:EUREKA X-RAY TUBE CORP.;REEL/FRAME:007289/0326 Effective date: 19941216 |
|
FPAY | Fee payment |
Year of fee payment: 12 |